CULTKLLUS.— Plate V. 



Species 19. (JIus. Brit.) \ fortified inside witli a strong rib under the umbo 



I in eacli valve; anterior side very sliort; posterinr 



OuLTELLUS Belcheri. CuL tcstd donfjcitu, compressd, | ^.^^ attenuated, sloped. 



sulameiformi, pallide purpurea ra(liata,epidermide \ ^^^^^^ ^ MS. in Brit. Mus. 



subviridi-fusco indiita ; intus costa validd infra \ ^^^ , 



umbonem in utrdque valvd munitd ; latere antico 



brevissimo ; latere postico attemiato, acclivi. 



Belcher's Cultellus. Shell elongated, compressed; ' Yi".\Q.b. 



a little wedge-shaped, rayed with pale purple, 



covered with a greenish-brown epidermis; CuLTELLL'sWlNTEi;iANU.s,7JitH/.cr,var. SpecieslO.Pl.lII. 



